What question did this study set out to answer?

To characterize the acquisition and dynamics of nasopharyngeal bacterial colonization in healthy infants during their first year of life.

Nasopharyngeal Colonization during the First Year of Life

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Prospective study observes nasopharyngeal colonization patterns in infants, suggesting early microbial exposure shapes respiratory health.

To characterize the acquisition and dynamics of nasopharyngeal bacterial colonization in healthy infants during their first year of life.
Followed a longitudinal cohort of healthy infants prospectively from birth through 12 months of age.
Obtained regular nasopharyngeal swab cultures at scheduled intervals during the first year to monitor bacterial flora.
Nasopharyngeal colonization rates increased progressively during the first year of life as infants experienced continuous environmental exposure.
Identified sequential carriage patterns of predominant upper respiratory tract bacterial species across infancy.

Aniansson et al. (1992) studied this question.

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Prospective study observes nasopharyngeal colonization patterns in infants, suggesting early microbial exposure shapes respiratory health.